java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.24.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 10:35:19,487 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 10:35:19,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 10:35:19,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 10:35:19,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 10:35:19,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 10:35:19,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 10:35:19,537 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 10:35:19,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 10:35:19,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 10:35:19,541 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 10:35:19,542 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 10:35:19,542 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 10:35:19,544 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 10:35:19,546 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 10:35:19,547 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 10:35:19,548 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 10:35:19,550 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 10:35:19,552 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 10:35:19,553 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 10:35:19,554 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 10:35:19,556 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 10:35:19,556 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 10:35:19,556 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 10:35:19,557 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 10:35:19,558 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 10:35:19,559 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 10:35:19,560 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 10:35:19,561 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 10:35:19,561 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 10:35:19,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 10:35:19,562 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 10:35:19,562 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 10:35:19,563 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 10:35:19,564 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 10:35:19,564 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 10:35:19,585 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 10:35:19,586 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 10:35:19,586 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 10:35:19,586 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 10:35:19,587 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 10:35:19,587 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 10:35:19,587 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 10:35:19,588 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 10:35:19,588 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 10:35:19,588 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 10:35:19,588 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:35:19,588 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 10:35:19,589 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 10:35:19,589 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 10:35:19,589 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 10:35:19,589 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 10:35:19,589 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 10:35:19,589 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 10:35:19,590 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 10:35:19,591 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 10:35:19,591 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 10:35:19,626 INFO ]: Repository-Root is: /tmp [2018-06-22 10:35:19,637 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 10:35:19,641 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 10:35:19,642 INFO ]: Initializing SmtParser... [2018-06-22 10:35:19,642 INFO ]: SmtParser initialized [2018-06-22 10:35:19,643 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.24.smt2 [2018-06-22 10:35:19,644 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 10:35:19,735 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.24.smt2 unknown [2018-06-22 10:35:20,525 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.24.smt2 [2018-06-22 10:35:20,529 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 10:35:20,535 INFO ]: Walking toolchain with 4 elements. [2018-06-22 10:35:20,535 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 10:35:20,535 INFO ]: Initializing ChcToBoogie... [2018-06-22 10:35:20,535 INFO ]: ChcToBoogie initialized [2018-06-22 10:35:20,538 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:35:20" (1/1) ... [2018-06-22 10:35:20,597 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20 Unit [2018-06-22 10:35:20,597 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 10:35:20,598 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 10:35:20,598 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 10:35:20,598 INFO ]: Boogie Preprocessor initialized [2018-06-22 10:35:20,619 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (1/1) ... [2018-06-22 10:35:20,619 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (1/1) ... [2018-06-22 10:35:20,632 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (1/1) ... [2018-06-22 10:35:20,632 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (1/1) ... [2018-06-22 10:35:20,648 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (1/1) ... [2018-06-22 10:35:20,654 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (1/1) ... [2018-06-22 10:35:20,658 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (1/1) ... [2018-06-22 10:35:20,661 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 10:35:20,662 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 10:35:20,662 INFO ]: Initializing RCFGBuilder... [2018-06-22 10:35:20,662 INFO ]: RCFGBuilder initialized [2018-06-22 10:35:20,663 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:35:20,678 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 10:35:20,678 INFO ]: Found specification of procedure False [2018-06-22 10:35:20,678 INFO ]: Found implementation of procedure False [2018-06-22 10:35:20,678 INFO ]: Specification and implementation of procedure combined_lturn__bar given in one single declaration [2018-06-22 10:35:20,678 INFO ]: Found specification of procedure combined_lturn__bar [2018-06-22 10:35:20,678 INFO ]: Found implementation of procedure combined_lturn__bar [2018-06-22 10:35:20,678 INFO ]: Specification and implementation of procedure lturn__bar given in one single declaration [2018-06-22 10:35:20,678 INFO ]: Found specification of procedure lturn__bar [2018-06-22 10:35:20,678 INFO ]: Found implementation of procedure lturn__bar [2018-06-22 10:35:20,678 INFO ]: Specification and implementation of procedure step_lturn__bar given in one single declaration [2018-06-22 10:35:20,678 INFO ]: Found specification of procedure step_lturn__bar [2018-06-22 10:35:20,678 INFO ]: Found implementation of procedure step_lturn__bar [2018-06-22 10:35:20,678 INFO ]: Specification and implementation of procedure step_lturn given in one single declaration [2018-06-22 10:35:20,678 INFO ]: Found specification of procedure step_lturn [2018-06-22 10:35:20,678 INFO ]: Found implementation of procedure step_lturn [2018-06-22 10:35:20,678 INFO ]: Specification and implementation of procedure combined_lturn given in one single declaration [2018-06-22 10:35:20,678 INFO ]: Found specification of procedure combined_lturn [2018-06-22 10:35:20,678 INFO ]: Found implementation of procedure combined_lturn [2018-06-22 10:35:20,678 INFO ]: Specification and implementation of procedure lturn given in one single declaration [2018-06-22 10:35:20,678 INFO ]: Found specification of procedure lturn [2018-06-22 10:35:20,678 INFO ]: Found implementation of procedure lturn [2018-06-22 10:35:20,678 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 10:35:20,678 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 10:35:20,678 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 10:35:21,723 INFO ]: Using library mode [2018-06-22 10:35:21,723 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:35:21 BoogieIcfgContainer [2018-06-22 10:35:21,724 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 10:35:21,725 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 10:35:21,725 INFO ]: Initializing TraceAbstraction... [2018-06-22 10:35:21,731 INFO ]: TraceAbstraction initialized [2018-06-22 10:35:21,731 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:35:20" (1/3) ... [2018-06-22 10:35:21,732 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41483f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 10:35:21, skipping insertion in model container [2018-06-22 10:35:21,732 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:35:20" (2/3) ... [2018-06-22 10:35:21,733 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41483f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:35:21, skipping insertion in model container [2018-06-22 10:35:21,733 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:35:21" (3/3) ... [2018-06-22 10:35:21,735 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 10:35:21,744 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 10:35:21,755 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 10:35:21,791 INFO ]: Using default assertion order modulation [2018-06-22 10:35:21,802 INFO ]: Interprodecural is true [2018-06-22 10:35:21,802 INFO ]: Hoare is false [2018-06-22 10:35:21,802 INFO ]: Compute interpolants for FPandBP [2018-06-22 10:35:21,802 INFO ]: Backedges is TWOTRACK [2018-06-22 10:35:21,802 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 10:35:21,802 INFO ]: Difference is false [2018-06-22 10:35:21,802 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 10:35:21,802 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 10:35:21,858 INFO ]: Start isEmpty. Operand 162 states. [2018-06-22 10:35:21,899 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:35:21,900 INFO ]: Found error trace [2018-06-22 10:35:21,901 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:35:21,901 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:35:21,907 INFO ]: Analyzing trace with hash 953620947, now seen corresponding path program 1 times [2018-06-22 10:35:21,909 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:35:21,909 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:35:21,942 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:21,942 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:21,942 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:22,075 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:22,515 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:35:22,519 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:35:22,519 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:35:22,521 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:35:22,536 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:35:22,536 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:35:22,539 INFO ]: Start difference. First operand 162 states. Second operand 6 states. [2018-06-22 10:35:25,272 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:35:25,272 INFO ]: Finished difference Result 246 states and 636 transitions. [2018-06-22 10:35:25,272 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:35:25,274 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 10:35:25,274 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:35:25,296 INFO ]: With dead ends: 246 [2018-06-22 10:35:25,296 INFO ]: Without dead ends: 242 [2018-06-22 10:35:25,298 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:35:25,315 INFO ]: Start minimizeSevpa. Operand 242 states. [2018-06-22 10:35:25,441 INFO ]: Finished minimizeSevpa. Reduced states from 242 to 224. [2018-06-22 10:35:25,442 INFO ]: Start removeUnreachable. Operand 224 states. [2018-06-22 10:35:25,449 INFO ]: Finished removeUnreachable. Reduced from 224 states to 224 states and 586 transitions. [2018-06-22 10:35:25,451 INFO ]: Start accepts. Automaton has 224 states and 586 transitions. Word has length 17 [2018-06-22 10:35:25,452 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:35:25,452 INFO ]: Abstraction has 224 states and 586 transitions. [2018-06-22 10:35:25,452 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:35:25,452 INFO ]: Start isEmpty. Operand 224 states and 586 transitions. [2018-06-22 10:35:25,460 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:35:25,460 INFO ]: Found error trace [2018-06-22 10:35:25,460 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:35:25,460 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:35:25,461 INFO ]: Analyzing trace with hash -1276022845, now seen corresponding path program 1 times [2018-06-22 10:35:25,461 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:35:25,461 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:35:25,462 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:25,462 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:25,462 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:25,491 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:25,651 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:35:25,651 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:35:25,651 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:35:25,653 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:35:25,653 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:35:25,653 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:35:25,653 INFO ]: Start difference. First operand 224 states and 586 transitions. Second operand 6 states. [2018-06-22 10:35:27,441 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:35:27,441 INFO ]: Finished difference Result 382 states and 1379 transitions. [2018-06-22 10:35:27,442 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:35:27,442 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 10:35:27,442 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:35:27,453 INFO ]: With dead ends: 382 [2018-06-22 10:35:27,453 INFO ]: Without dead ends: 381 [2018-06-22 10:35:27,454 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:35:27,454 INFO ]: Start minimizeSevpa. Operand 381 states. [2018-06-22 10:35:27,600 INFO ]: Finished minimizeSevpa. Reduced states from 381 to 334. [2018-06-22 10:35:27,600 INFO ]: Start removeUnreachable. Operand 334 states. [2018-06-22 10:35:27,630 INFO ]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1208 transitions. [2018-06-22 10:35:27,630 INFO ]: Start accepts. Automaton has 334 states and 1208 transitions. Word has length 17 [2018-06-22 10:35:27,630 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:35:27,630 INFO ]: Abstraction has 334 states and 1208 transitions. [2018-06-22 10:35:27,630 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:35:27,630 INFO ]: Start isEmpty. Operand 334 states and 1208 transitions. [2018-06-22 10:35:27,636 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:35:27,636 INFO ]: Found error trace [2018-06-22 10:35:27,636 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:35:27,637 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:35:27,637 INFO ]: Analyzing trace with hash -350535323, now seen corresponding path program 1 times [2018-06-22 10:35:27,637 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:35:27,637 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:35:27,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:27,638 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:27,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:27,672 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:27,825 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:35:27,825 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:35:27,825 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 10:35:27,825 INFO ]: Interpolant automaton has 7 states [2018-06-22 10:35:27,825 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 10:35:27,826 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:35:27,826 INFO ]: Start difference. First operand 334 states and 1208 transitions. Second operand 7 states. [2018-06-22 10:35:29,862 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:35:29,862 INFO ]: Finished difference Result 365 states and 1381 transitions. [2018-06-22 10:35:29,864 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 10:35:29,864 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 10:35:29,864 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:35:29,875 INFO ]: With dead ends: 365 [2018-06-22 10:35:29,875 INFO ]: Without dead ends: 365 [2018-06-22 10:35:29,875 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:35:29,876 INFO ]: Start minimizeSevpa. Operand 365 states. [2018-06-22 10:35:29,999 INFO ]: Finished minimizeSevpa. Reduced states from 365 to 342. [2018-06-22 10:35:29,999 INFO ]: Start removeUnreachable. Operand 342 states. [2018-06-22 10:35:30,004 INFO ]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1292 transitions. [2018-06-22 10:35:30,005 INFO ]: Start accepts. Automaton has 342 states and 1292 transitions. Word has length 21 [2018-06-22 10:35:30,005 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:35:30,005 INFO ]: Abstraction has 342 states and 1292 transitions. [2018-06-22 10:35:30,005 INFO ]: Interpolant automaton has 7 states. [2018-06-22 10:35:30,005 INFO ]: Start isEmpty. Operand 342 states and 1292 transitions. [2018-06-22 10:35:30,012 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:35:30,012 INFO ]: Found error trace [2018-06-22 10:35:30,012 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:35:30,012 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:35:30,013 INFO ]: Analyzing trace with hash 1381898019, now seen corresponding path program 1 times [2018-06-22 10:35:30,013 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:35:30,013 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:35:30,014 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:30,014 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:30,014 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:30,033 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:30,738 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:35:30,739 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:35:30,739 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:35:30,755 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:30,843 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:30,853 INFO ]: Computing forward predicates... [2018-06-22 10:35:31,331 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:35:31,364 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:35:31,364 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 10:35:31,365 INFO ]: Interpolant automaton has 14 states [2018-06-22 10:35:31,365 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 10:35:31,365 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 10:35:31,365 INFO ]: Start difference. First operand 342 states and 1292 transitions. Second operand 14 states. [2018-06-22 10:35:40,965 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:35:40,965 INFO ]: Finished difference Result 1022 states and 7589 transitions. [2018-06-22 10:35:40,966 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-22 10:35:40,966 INFO ]: Start accepts. Automaton has 14 states. Word has length 25 [2018-06-22 10:35:40,967 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:35:41,020 INFO ]: With dead ends: 1022 [2018-06-22 10:35:41,020 INFO ]: Without dead ends: 1018 [2018-06-22 10:35:41,020 INFO ]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2018-06-22 10:35:41,021 INFO ]: Start minimizeSevpa. Operand 1018 states. [2018-06-22 10:35:41,968 INFO ]: Finished minimizeSevpa. Reduced states from 1018 to 943. [2018-06-22 10:35:41,969 INFO ]: Start removeUnreachable. Operand 943 states. [2018-06-22 10:35:42,000 INFO ]: Finished removeUnreachable. Reduced from 943 states to 943 states and 6983 transitions. [2018-06-22 10:35:42,000 INFO ]: Start accepts. Automaton has 943 states and 6983 transitions. Word has length 25 [2018-06-22 10:35:42,001 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:35:42,001 INFO ]: Abstraction has 943 states and 6983 transitions. [2018-06-22 10:35:42,001 INFO ]: Interpolant automaton has 14 states. [2018-06-22 10:35:42,001 INFO ]: Start isEmpty. Operand 943 states and 6983 transitions. [2018-06-22 10:35:42,012 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:35:42,012 INFO ]: Found error trace [2018-06-22 10:35:42,012 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:35:42,012 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:35:42,013 INFO ]: Analyzing trace with hash -1907004066, now seen corresponding path program 1 times [2018-06-22 10:35:42,013 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:35:42,013 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:35:42,014 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:42,014 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:42,014 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:42,036 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:42,330 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:35:42,330 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:35:42,330 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:35:42,341 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:42,393 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:42,396 INFO ]: Computing forward predicates... [2018-06-22 10:35:42,725 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:35:42,746 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:35:42,746 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 10:35:42,746 INFO ]: Interpolant automaton has 14 states [2018-06-22 10:35:42,746 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 10:35:42,747 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 10:35:42,747 INFO ]: Start difference. First operand 943 states and 6983 transitions. Second operand 14 states. [2018-06-22 10:35:48,162 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:35:48,162 INFO ]: Finished difference Result 2136 states and 27755 transitions. [2018-06-22 10:35:48,162 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 10:35:48,162 INFO ]: Start accepts. Automaton has 14 states. Word has length 25 [2018-06-22 10:35:48,162 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:35:48,315 INFO ]: With dead ends: 2136 [2018-06-22 10:35:48,315 INFO ]: Without dead ends: 2136 [2018-06-22 10:35:48,315 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-06-22 10:35:48,317 INFO ]: Start minimizeSevpa. Operand 2136 states. [2018-06-22 10:35:50,941 INFO ]: Finished minimizeSevpa. Reduced states from 2136 to 2025. [2018-06-22 10:35:50,941 INFO ]: Start removeUnreachable. Operand 2025 states. [2018-06-22 10:35:51,071 INFO ]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 26225 transitions. [2018-06-22 10:35:51,071 INFO ]: Start accepts. Automaton has 2025 states and 26225 transitions. Word has length 25 [2018-06-22 10:35:51,071 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:35:51,071 INFO ]: Abstraction has 2025 states and 26225 transitions. [2018-06-22 10:35:51,071 INFO ]: Interpolant automaton has 14 states. [2018-06-22 10:35:51,071 INFO ]: Start isEmpty. Operand 2025 states and 26225 transitions. [2018-06-22 10:35:51,088 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:35:51,088 INFO ]: Found error trace [2018-06-22 10:35:51,088 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:35:51,088 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:35:51,089 INFO ]: Analyzing trace with hash -1313412269, now seen corresponding path program 1 times [2018-06-22 10:35:51,089 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:35:51,089 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:35:51,090 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:51,090 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:51,090 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:51,107 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:51,236 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:35:51,236 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:35:51,236 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 10:35:51,236 INFO ]: Interpolant automaton has 7 states [2018-06-22 10:35:51,236 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 10:35:51,236 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:35:51,237 INFO ]: Start difference. First operand 2025 states and 26225 transitions. Second operand 7 states. [2018-06-22 10:35:54,128 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:35:54,128 INFO ]: Finished difference Result 2148 states and 28523 transitions. [2018-06-22 10:35:54,128 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 10:35:54,128 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 10:35:54,128 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:35:54,257 INFO ]: With dead ends: 2148 [2018-06-22 10:35:54,258 INFO ]: Without dead ends: 2148 [2018-06-22 10:35:54,258 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:35:54,259 INFO ]: Start minimizeSevpa. Operand 2148 states. [2018-06-22 10:35:56,544 INFO ]: Finished minimizeSevpa. Reduced states from 2148 to 2056. [2018-06-22 10:35:56,544 INFO ]: Start removeUnreachable. Operand 2056 states. [2018-06-22 10:35:56,649 INFO ]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 27018 transitions. [2018-06-22 10:35:56,649 INFO ]: Start accepts. Automaton has 2056 states and 27018 transitions. Word has length 21 [2018-06-22 10:35:56,650 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:35:56,650 INFO ]: Abstraction has 2056 states and 27018 transitions. [2018-06-22 10:35:56,650 INFO ]: Interpolant automaton has 7 states. [2018-06-22 10:35:56,650 INFO ]: Start isEmpty. Operand 2056 states and 27018 transitions. [2018-06-22 10:35:56,668 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:35:56,668 INFO ]: Found error trace [2018-06-22 10:35:56,668 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:35:56,668 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:35:56,669 INFO ]: Analyzing trace with hash -532205605, now seen corresponding path program 1 times [2018-06-22 10:35:56,669 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:35:56,669 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:35:56,669 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:56,669 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:56,669 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:56,689 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:35:56,930 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:35:56,930 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:35:56,930 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 10:35:56,930 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:35:56,931 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:35:56,931 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:35:56,931 INFO ]: Start difference. First operand 2056 states and 27018 transitions. Second operand 6 states. [2018-06-22 10:35:57,173 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:35:57,174 INFO ]: Finished difference Result 2058 states and 27018 transitions. [2018-06-22 10:35:57,174 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:35:57,174 INFO ]: Start accepts. Automaton has 6 states. Word has length 21 [2018-06-22 10:35:57,174 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:35:57,281 INFO ]: With dead ends: 2058 [2018-06-22 10:35:57,281 INFO ]: Without dead ends: 2058 [2018-06-22 10:35:57,281 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:35:57,291 INFO ]: Start minimizeSevpa. Operand 2058 states. [2018-06-22 10:35:59,648 INFO ]: Finished minimizeSevpa. Reduced states from 2058 to 2056. [2018-06-22 10:35:59,649 INFO ]: Start removeUnreachable. Operand 2056 states. [2018-06-22 10:35:59,732 INFO ]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 27016 transitions. [2018-06-22 10:35:59,732 INFO ]: Start accepts. Automaton has 2056 states and 27016 transitions. Word has length 21 [2018-06-22 10:35:59,732 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:35:59,732 INFO ]: Abstraction has 2056 states and 27016 transitions. [2018-06-22 10:35:59,732 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:35:59,732 INFO ]: Start isEmpty. Operand 2056 states and 27016 transitions. [2018-06-22 10:35:59,751 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:35:59,751 INFO ]: Found error trace [2018-06-22 10:35:59,751 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:35:59,751 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:35:59,751 INFO ]: Analyzing trace with hash 295026329, now seen corresponding path program 1 times [2018-06-22 10:35:59,751 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:35:59,751 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:35:59,753 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:59,753 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:35:59,753 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:35:59,770 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:36:00,032 INFO ]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 10:36:00,033 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:36:00,033 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:36:00,042 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:36:00,073 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:36:00,076 INFO ]: Computing forward predicates... [2018-06-22 10:36:00,156 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 10:36:00,177 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:36:00,177 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-06-22 10:36:00,177 INFO ]: Interpolant automaton has 13 states [2018-06-22 10:36:00,177 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 10:36:00,177 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 10:36:00,177 INFO ]: Start difference. First operand 2056 states and 27016 transitions. Second operand 13 states. [2018-06-22 10:36:01,092 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:36:01,093 INFO ]: Finished difference Result 2094 states and 28266 transitions. [2018-06-22 10:36:01,093 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 10:36:01,093 INFO ]: Start accepts. Automaton has 13 states. Word has length 25 [2018-06-22 10:36:01,093 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:36:01,232 INFO ]: With dead ends: 2094 [2018-06-22 10:36:01,232 INFO ]: Without dead ends: 2094 [2018-06-22 10:36:01,232 INFO ]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2018-06-22 10:36:01,235 INFO ]: Start minimizeSevpa. Operand 2094 states. [2018-06-22 10:36:04,020 INFO ]: Finished minimizeSevpa. Reduced states from 2094 to 2056. [2018-06-22 10:36:04,020 INFO ]: Start removeUnreachable. Operand 2056 states. [2018-06-22 10:36:04,092 INFO ]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 27013 transitions. [2018-06-22 10:36:04,092 INFO ]: Start accepts. Automaton has 2056 states and 27013 transitions. Word has length 25 [2018-06-22 10:36:04,092 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:36:04,092 INFO ]: Abstraction has 2056 states and 27013 transitions. [2018-06-22 10:36:04,092 INFO ]: Interpolant automaton has 13 states. [2018-06-22 10:36:04,092 INFO ]: Start isEmpty. Operand 2056 states and 27013 transitions. [2018-06-22 10:36:04,106 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 10:36:04,106 INFO ]: Found error trace [2018-06-22 10:36:04,106 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:36:04,106 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:36:04,108 INFO ]: Analyzing trace with hash 1740746975, now seen corresponding path program 1 times [2018-06-22 10:36:04,108 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:36:04,108 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:36:04,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:36:04,108 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:36:04,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:36:04,126 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:36:04,319 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 10:36:04,319 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:36:04,319 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:36:04,337 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:36:04,379 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:36:04,381 INFO ]: Computing forward predicates... [2018-06-22 10:36:04,608 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 10:36:04,640 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:36:04,641 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-06-22 10:36:04,641 INFO ]: Interpolant automaton has 16 states [2018-06-22 10:36:04,641 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 10:36:04,641 INFO ]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-06-22 10:36:04,641 INFO ]: Start difference. First operand 2056 states and 27013 transitions. Second operand 16 states. [2018-06-22 10:36:18,013 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:36:18,013 INFO ]: Finished difference Result 3934 states and 83119 transitions. [2018-06-22 10:36:18,014 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-22 10:36:18,014 INFO ]: Start accepts. Automaton has 16 states. Word has length 29 [2018-06-22 10:36:18,014 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:36:18,343 INFO ]: With dead ends: 3934 [2018-06-22 10:36:18,343 INFO ]: Without dead ends: 3934 [2018-06-22 10:36:18,343 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2018-06-22 10:36:18,345 INFO ]: Start minimizeSevpa. Operand 3934 states. Received shutdown request... [2018-06-22 10:36:21,013 WARN ]: Verification canceled [2018-06-22 10:36:21,016 WARN ]: Timeout [2018-06-22 10:36:21,017 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:36:21 BoogieIcfgContainer [2018-06-22 10:36:21,017 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 10:36:21,017 INFO ]: Toolchain (without parser) took 60487.87 ms. Allocated memory was 304.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 244.1 MB in the beginning and 454.9 MB in the end (delta: -210.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 10:36:21,019 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 10:36:21,019 INFO ]: ChcToBoogie took 62.48 ms. Allocated memory is still 304.6 MB. Free memory was 243.1 MB in the beginning and 240.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:36:21,019 INFO ]: Boogie Preprocessor took 63.28 ms. Allocated memory is still 304.6 MB. Free memory was 240.1 MB in the beginning and 238.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:36:21,020 INFO ]: RCFGBuilder took 1061.63 ms. Allocated memory is still 304.6 MB. Free memory was 238.1 MB in the beginning and 190.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:36:21,021 INFO ]: TraceAbstraction took 59291.62 ms. Allocated memory was 304.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 190.1 MB in the beginning and 454.9 MB in the end (delta: -264.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 10:36:21,023 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.48 ms. Allocated memory is still 304.6 MB. Free memory was 243.1 MB in the beginning and 240.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.28 ms. Allocated memory is still 304.6 MB. Free memory was 240.1 MB in the beginning and 238.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1061.63 ms. Allocated memory is still 304.6 MB. Free memory was 238.1 MB in the beginning and 190.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59291.62 ms. Allocated memory was 304.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 190.1 MB in the beginning and 454.9 MB in the end (delta: -264.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 162 locations, 1 error locations. TIMEOUT Result, 59.2s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 39.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3808 SDtfs, 213 SDslu, 27573 SDs, 0 SdLazy, 40402 SolverSat, 2292 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2056occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 406 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 305 NumberOfCodeBlocks, 305 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 292 ConstructedInterpolants, 0 QuantifiedInterpolants, 17208 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1259 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 21/47 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fortune-half.24.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_10-36-21-042.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fortune-half.24.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_10-36-21-042.csv Completed graceful shutdown